homePath = "http://www.yagoora.jp/";
dir = "css/";
path = "/";

function changeCss(id, theme){
	var cssObj = document.getElementById(id);
	if(cssObj){
		cssObj.href = homePath + dir + theme + ".css";
	}
	document.cookie = id + "=" + escape(theme) + ";path=" + path + ";expires=Wed, 01 Jan 2020 18:57:34 GMT";
}

function initCss(id){
	cookieKey = id + "=";
	cookies = document.cookie + ";";
	start = cookies.indexOf(cookieKey);
	if(start != -1){
		end = cookies.indexOf(";",start);
		theme = unescape(cookies.substring(start + cookieKey.length, end));
		changeCss(id, theme);
	}
}